Feature: Stock Purchase Metrics (#2135)

* Feature: Stock Purchase Metrics

* chart update

* Refactor to chartjs

* More suggestion edits

- locale in javascript
- global translations
- commit migrations sql file

* Rename 0215.sql to 0216.sql

Fixed merge conflict

* Fixed merge conflict

* Applied code style

* Added missing demo data translations

* Removed unused package "canvasjs"

* Don't include daterangepicker globally when only needed on a single page / fixed view section imports

* Rename this to "Spendings" / name it more generically "Stock reports"

* Reuse the existing product_price_history view

* Final cleanup

* Whitespace fix

---------

Co-authored-by: Travis Raup <travis.raup@platform.sh>
Co-authored-by: Bernd Bestel <bernd@berrnd.de>

migrations/0216.sql

@@ -0,0 +1,25 @@
+DROP VIEW product_price_history;
+CREATE VIEW product_price_history
+AS
+SELECT
+	sl.product_id AS id, -- Dummy, LessQL needs an id column
+	sl.product_id,
+	sl.price,
+	sl.amount,
+	sl.purchased_date,
+	sl.shopping_location_id
+FROM stock_log sl
+WHERE sl.transaction_type IN ('purchase', 'inventory-correction', 'stock-edit-new')
+	AND sl.undone = 0
+	AND IFNULL(sl.price, 0) > 0
+	AND IFNULL(sl.amount, 0) > 0
+	AND sl.id NOT IN (
+			-- These are edited purchase and inventory-correction rows
+			SELECT sl_origin.id
+			FROM stock_log sl_origin
+			JOIN stock_log sl_edit
+				ON sl_origin.stock_id = sl_edit.stock_id
+				AND sl_edit.transaction_type = 'stock-edit-new'
+				AND sl_edit.id > sl_origin.id
+			WHERE sl_origin.transaction_type IN ('purchase', 'inventory-correction')
+		);